build on the target board under CP/M 
tools needed:
RMAC.COM
LINK.COM

system files needed:
MAKEDATE.LIB

instructions:
RMAC CPMLDR		; assemble bios source files
RMAC LDRBIOS
LINK XCPM3LDR[L100]=CPMLDR,LDRBIOS	; make XCPM3LDR.COM

use dump to convert the file to text and copy paste it to 
the main computer. convert it back to binary.

assemble bootsec.asm:
PASMO bootsec.asm bootsec.com

then concatenate bootsec.com, xcpm3ldr.com & ccp.com and put 
the result in volume3 track 0
